week at abc news, we've been searching for solutions to gun violence in america after the tragedy at sandy hook. and we've been talking every day about how to keep our kids safe. well, tonight, "20/20" anchor chris cuomo went back to his old elementary school and talked to some children about their ideas on violence. >> the real monsters in the world are just regular people. >> reporter: fourth and fifth graders take on the tough questions that grip our nation. >> why would he do that? when did he get the urge to do it? >> why does it help you to know why he did it? >> it's happened, something made him do it, so you can stop that from happening to another person, making them do it again. >> reporter: and listen to what they say about guns. are guns bad? >> not always. >> guns can be good or bad depending who's using them. >> reporter: is the answer no guns? >> no. not exactly. >> reporter: let's say, i need a gun, sell me a gun, should i be able to get it right then? >> no. >> you should limit the amount of bullets that can be in a gun. >> reporter: why do you think this happened -- the gu